Two General Questions about my 1974 Dart

Alright, I am unsure if this is exactly where these questions go, but I consider them to be general, if not, just politely call me a dumbass and tell me where to post! :read2:

My Dart needs a new windshield.
I have a lead on a windshield from a 1975 Dart 4dr that is a good price, but the seller says it only fits 4dr cars.
Was the windshield really different from a 4dr Dart to a 2dr Dart?
They seem the same to me...

My Dart needs a new driver's side fender.
It has a fiberglass passenger side fender which is great quality and fits perfectly.
It includes a used, decent, steel driver's side fender in the purchase, but I think if I'm going to replace the fender, I'd rather just get a fiberglass fender and do it right, that way it will never rust again.
However, I've tried to find a supplier that sells fiberglass fenders for the 1974-76 style Darts and have had no success.
Does anyone know where I can find a supplier online or in my area (New England)?
I intend to ask the seller if he knows of a supplier, as I vaguely remember him mentioning finding a supplier when I looked at the car on Sunday.

Thank you very much for your help!
I appreciate it!